The Heritage Days, a prime opportunity to explore the capital and nearby departments to uncover a wealth of monuments, churches, institutions, and remarkable castles, often open to the public with special access this weekend of September 19 and 20, 2026. Between free activities and self-guided or guided tours, curious visitors learn countless anecdotes about the treasures that surround us.
Heritage Days 2026 at the Yvelines' castles, the program for the 78.
And what if Heritage Days 2026 were the moment to go on a quest for the Île-de-France castles? This time, we set course for the Yvelines to uncover the magnificent residences that will open their doors this weekend, September 19–20, 2026. [Read more]
If you’re exploring the Yvelines or simply eager to uncover the department’s hidden gems, head for the Château de La Celle-Saint-Cloud, nestled in the eponymous town. Built at the end of the 18th century, this château began life as a monastery and is now owned by the Ministry of Foreign Affairs. A designated historic monument since 1978, its grounds host a collection of contemporary artworks. Today it hosts international conferences and also serves as a residence for heads of state and foreign delegations.
Self-guided visit to the park and the château's kitchen garden at La Celle-Saint-Cloud
The town of La Celle-Saint-Cloud and the Ministry for Europe and Foreign Affairs are partnering with this event organized by the Ministry of Culture, and will exceptionally open the doors of the château’s park. On a bucolic stroll, just past a remarkable tree, visitors will be invited to discover the rich wildlife and flora thriving in the park and the château’s kitchen garden.
Participation requirements : Access to the Château Park via the gate on Avenue Mesureur. Free | No reservation required
Hours: Saturday, September 19, 2026 — 10:00–18:00 | Sunday, September 20, 2026 — 10:00–18:00
Beekeeping: A Discovery Exhibition
Immerse yourself in the fascinating world of bees with an exhibit dedicated to beekeeping, set up in the Orangery of the castle’s park.
In the presence of the beekeepers, discover their craft through engaging, educational demonstrations, to better understand the essential role these insects play in our environment.
Participation requirements: Free | No reservation required
Opening hours: Saturday, 19 September 2026 — 10:00–18:00 | Sunday, 20 September 2026 — 10:00–18:00
Guided tour of the Château de La Celle Saint-Cloud Park
Let yourself be guided through the grounds of the Château de La Celle-Saint-Cloud, as you discover its history and biodiversity.
Participation conditions: Access to the château park through the gate on Avenue Gustave Mesureur. The visit begins at the castle's forecourt. - Free | No reservation required
Schedules: Saturday, September 19, 2026 — 10:30–11:00 | Sunday, September 20, 2026 — 10:30–11:00, 14:00–14:30, 16:00–16:30
Dates and Opening Time
From September 19, 2026 to September 20, 2026
Location
Château de la Celle Saint Cloud
château de la celle saint cloud
78170 Celle Saint Cloud (La)
Route planner
Prices
Free
Official website
journeesdupatrimoine.culture.gouv.fr
Heritage Days 2026 at the Yvelines' castles, the program for the 78.
